GOODWILL AND INTANGIBLE ASSETS (Identifiable Intangible Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, finite and indefinite-lived intangible assets	$ 817	$ 848
Accumulated amortization	319	309
Customer Relationships and Lists [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, finite-lived intangible assets	531	561
Accumulated amortization	164	157
Non-Compete Agreements [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, finite-lived intangible assets	73	74
Accumulated amortization	55	53
Tradenames, Patents and Trademarks [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, finite and indefinite-lived intangible assets	61	61
Accumulated amortization	49	44
Land and Water Rights [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, finite and indefinite-lived intangible assets	90	81
Accumulated amortization	10	9
Fuel and Power Agreements [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, finite-lived intangible assets	5	5
Accumulated amortization	3	3
Software [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, finite-lived intangible assets	22	23
Accumulated amortization	21	22
Other Intangible Assets [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, finite-lived intangible assets	35	43
Accumulated amortization	$ 17	$ 21